Advertisements
Advertisements
प्रश्न
The interests on two successive years for a sum invested at compound interest compounded annually are Rs 840 and Rs 940.80. Calculate the rate of interest and the sum invested.
Advertisements
उत्तर
For the seoond year:
A=Rs 940.80 ; P=Rs 840 ; n= 1 ; r = ?
`"A" = "P" (1 + "r"/100)^"n"`
940.80 = 840 `(1 + "r"/100)^1`
94080 = 84000 +840 r
840 r = 10080
r = 12
Hence, rate of interest = 12°/o
For the first year:
I= Rs 840 ; r = 12 % ; n = l ; P = ?
`"I" =("P" xx "r" xx "n")/100`
Rs 840 = Rs `("P" xx 12 xx 1)/100`
P = Rs`84000/12`
P = Rs 7000
The sum invested= Rs 7,000
संबंधित प्रश्न
What sum of money will amount to Rs 13,675.20 in 3 years at compound interest, if the rates of interest are 10%, 11% and 12% for the successive years?
Calculate the amount and cornpound interest for the following, when cornpounded annually:
Rs 16,000 for 3 years at `7 1/2` % p.a.
On what sum of money will the compound interest for `2 1/2` years at 12% per annum amount to Rs 8,241.60?
On what sum of money will the compound interest for `1 1/2` years at 16% p.a. compounded half-yearly amount to Rs 649.28?
On what sum of money will the compound interest for 2 years at 10% p.a. compounded half-yearly amount to Rs 3,448.10?
In what time will Rs 8,000 amount to Rs 12,167 at 15% per annum compounded annually?
A sum of money placed at compound interest compounded annually amounts to Rs 31,360 in 2 years and to Rs 35,123.20 in 3 years. Calculate the rate of interest and the sum.
In how many years will Rs. 15,625 amount to Rs. 17,576 at 4% p.a., compound interest?
The population of a city is 1,25,000. If the annual birth rate and death rate are 5.5% and 3.5% respectively. Calculate the population of the city after 3 years.
The S.I. and C.I. on a sum of money for 2 years is Rs. 200 and 210 respectively. If the rate of interest is the same. Find the sum and rate.
